Adding MuonSim.SetMakeTrigger(MUON); now required by the new CTP framework (Christian)

[u/mrichter/AliRoot.git] / FASTSIM / AliFastMuonTrackingAcc.cxx

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/* $Id$ */

// Realisation of AliFastResponse for the
// fast simulation of the muon spectrometer acceptance.
// The acceptance depends on the muon 3-vector which can be passed as (pt, theta, phi), 
// where pt is the transverse momentum, theta the polar angle and phi the azimuthal angle.
// Author: Andreas Morsch
// andreas.morsch@cern.ch 

#include "AliFastMuonTrackingAcc.h"
#include "AliMUONFastTracking.h"

ClassImp(AliFastMuonTrackingAcc)


AliFastMuonTrackingAcc::AliFastMuonTrackingAcc() :
    AliFastResponse("Acceptance", "Muon Tracking Acceptance")
{
    SetBackground();
}

AliFastMuonTrackingAcc::AliFastMuonTrackingAcc(const AliFastMuonTrackingAcc & acc)
    :AliFastResponse(acc)
{
// Copy constructor
    acc.Copy(*this);
}

void AliFastMuonTrackingAcc::Init()
{
    fFastTracking = AliMUONFastTracking::Instance();
    fFastTracking->Init(fBackground);
}



Float_t AliFastMuonTrackingAcc::Evaluate(Float_t /*charge*/, Float_t pt, Float_t theta, Float_t phi)
{
// Evaluate the tracking acceptance for 3-vector pt, theta, phi
    Float_t p = pt / TMath::Sin(theta*TMath::Pi()/180.);
    Float_t eff =  fFastTracking->Acceptance(p, theta, phi, Int_t(fCharge));
    return eff;
}

AliFastMuonTrackingAcc& AliFastMuonTrackingAcc::operator=(const  AliFastMuonTrackingAcc& rhs)
{
// Assignment operator
    rhs.Copy(*this);
    return *this;
}